When I said it depends, it is that import tax varies depending on the product. Electronics are taxed at 60% over the price of the product plus freight. There are also other taxes on top of import tax. The Brazilian tax system is very complex, and it is not "just" 60% over the price of the product.It doesn't depend. All this is socialist non sense and the cause of your frustration. The govt needs to be sacked, not backed.
As for the "socialist nonsense", I wish it was that simple. Brazil has ever had very high taxes much before the first left-wing government took office. Both right-wing and left-wing governments have something in common, which is keeping taxes high and raising them even more, either for protectionism of local industry or for spending tons of money to fund social programs and local companies and to keep a huge bureaucratic structure.